For this Hugo-powered website, I decided to use the Toha theme, available on Github.
Although the documentation has a great “Getting started” guide, I was missing some steps on how to upgrade a theme to its current version.

Following some comments, apparently this is not something that is done often, unless there are significant updates in either functionality or layout.
I tend to disagree, so I want to make sure I have the correct steps at hand.


All commands below are tailored to my own use of the Toha-theme, so change accordingly if you want to use another theme.

Initializing git repository

Before executing any of the other commands below, make sure you have initialized your git repository by issuing the following command:

$ git init

Adding a theme

Once you have initialized your git repository, you can go ahead and add one or more themes to your website.
In this case, I’ve added the Toha theme as a git submodule using the following command:

$ git submodule add themes/toha

Updating a theme

When it is time to update your theme, it is as simple as updating the git submodule.

$ git submodule update --remote --merge